Chicago Free Trolley

To go from Chicago Union Station to the Chicago Institute of Art 
It is a 19-minute walk.
There is a free trolley that runs until 6 pm (see below).
There is a city bus that we can take to the art institute - Bus 151 to go there and Bus 126 to return. The bus trip is about 12 minutes. 
Bus Schedules: 

Green (Triangle) Trolley Line Stops: 
Museums

Daily Service 10AM to 6PM

Metra Union Station, 490 W. Adams 
Metra Ogilvie Station, 5 N. Canal 
Macy's and Millennium Park, 25 E. Washington (just east of State Street) 
Art Institute and Millennium Park, 220 S. Michigan 
Spertus Museum (hotels), 614 S. Michigan (Buckingham Fountain) 
CTA Orange/Green, 10 E. Roosevelt 
Adler Planetarium, 700 E. Solidarity 
Shedd Aquarium, E. McFetridge (at Museum Campus Drive) 
Field Museum, 434 E. McFetridge 
CTA Orange/Green, 11 E. Roosevelt 
Grant Park (south of Harrison) 601 S. Michigan (Buckingham Fountain) 
Art Institute and Millennium Park, 70 E. Adams 
Returns to Union Station and Ogilvie Station